from datetime import date

from translated_fields import TranslatedFieldWithFallback

from django.contrib.auth import get_user_model
from django.db import models
from django.utils.translation import gettext_lazy as _

from shared.utils import choices_length, token_generator

from .staticdefs import DEPARTMENTS, ELECTED, STATUSES

User = get_user_model()

# #############################################################################
#  Petition related models
# #############################################################################


class Petition(models.Model):
    title = TranslatedFieldWithFallback(models.CharField(_("titre"), max_length=255))
    text = TranslatedFieldWithFallback(models.TextField(_("texte"), blank=True))
    letter = TranslatedFieldWithFallback(models.TextField(_("lettre"), blank=True))

    created_by = models.ForeignKey(
        User,
        related_name="petitions_created",
        on_delete=models.SET_NULL,
        blank=True,
        null=True,
    )

    launch_date = models.DateField(_("date d'ouverture"), default=date.today)

    archived = models.BooleanField(_("archivée"), default=False)

    class Meta:
        permissions = [
            ("is_admin", _("Peut administrer des pétitions")),
        ]
        ordering = ["-launch_date"]


class Signature(models.Model):
    petition = models.ForeignKey(
        Petition, related_name="signatures", on_delete=models.CASCADE
    )

    full_name = models.CharField(_("nom complet"), max_length=255)
    email = models.EmailField(_("adresse mail"))

    status = models.CharField(
        _("statut"),
        choices=STATUSES,
        max_length=choices_length(STATUSES),
        default="autre",
    )
    elected = models.CharField(
        _("poste d'élu"),
        choices=ELECTED,
        max_length=choices_length(ELECTED),
        default="",
        blank=True,
    )
    department = models.CharField(
        _("département"),
        choices=DEPARTMENTS,
        max_length=choices_length(DEPARTMENTS),
        default="",
        blank=True,
    )

    verified = models.BooleanField(_("adresse mail vérifiée"), default=False)
    valid = models.BooleanField(_("signature vérifiée"), default=False)

    token = models.SlugField(_("token"), editable=False, default=token_generator)

    timestamp = models.DateTimeField(_("horodatage"), auto_now=True)

    class Meta:
        constraints = [
            models.UniqueConstraint(
                fields=["petition", "email"], name="unique_signature"
            )
        ]